Improved method of securing bits in stocks



A UNITED STATES PATENT UEETCE.

DANIEL KELLY, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO HIMSELF AND JACOBA. SMITH, OF SAME PLACE.

iit/iiOVED-METHGD OF SECUFHNG BITS ibi STOCKS.

Spccilication forming part of Letters Patent No. Sfll @6, dated December16, 1862.

To @ZZ whom it may concern.-

Be it known that I, DANIEL KELLY, of Grand Rapids, in the county ot'Kent and State of Michigan, have invented a new and Improved Device forSecuring Bits in their Stocks, and I do hereby declare that thefollowing is a iull4 clear, and erao description thereof, referencebcinghad to the accom panying drawings, making a part of thisspecilication, in Which- Figure l is a side view showing the improvedbit stock, showing a bit secured in it. Fig. 2 is a view ci' a bit-headadapted to the improved stock. Fig. 3 is a top view ot' a squarebitstock having my improvement applied to it. Fig. 4 is aperspectiveview ofthe fastening` detached from the stock. Fig. 5 shows theapplication of my improvement to a round bit-stock.

Similar letters of reference indicate correspouding` parts in theseveral iigures.

The object of this invention is to obtain a simple device for securing'bits to their stock, which may he readily applied to an ordinary roundor square stock, and which will draw the bithead tirinly into the stockand at the same time lock it securely therein, as will be hereinafterdescribed.

To enable those skilled in the art to make and use my invcntion,I willproceed to de scribe its construction and operation.

A represents the bit-stock, or that portion into which the heads ofthebits are secured. This stock, which may be either round or square, hasthe usual'square tapering` socket formed through it, or into its lowerend, for receiving the corresponding tapering heads B ot' the bits, asshown in Figs. l and 3 of the drawings. The square stock Av has a smallrecess formed into one corner of its upper end, and into this recess awedge-key or notched button, u, is pivoted, so that a portion of thiskey will project over the socket, which is through the stock, as shownin Fig. 4E of the drawings. This button c, which secures the hit in thestock, consists or" a dat disk having a notch cut into one edge, toallow the end ot the bit-head to pass through the stock A. Unc ot theedges ot' the notch is beveled, so as to form a model or key, b, whichis intended to draw the bit-head tightly into its socket. Through thecenter of the button a a hole is made, to receive a screw-pin, c, whichscrew secures the button in its recess in the top of stock A, and formsa pivot, about which the butt-on turns, as shown in Figs. l and 3 of thedrawings. A short projection, d, on the button a, serves as a handle,which is used in tuining the button to lock the bit in the stock A. Theheads of bits, which are to be secured in stock A, must each have aslot, e, cut transversely into one of their corners, as shown in Fig. 2.This slot can be readily made with a saw, andit should be made at suchapointon each bit-head that when the bit-head is introduced into thesocket in stock A, the tapered edge or wedge Z1 ofthe button a may beforced under the upper edge of the slot e in the bithead. The Wedge bwill thus draw the bit tightly up into its socket, `and as the wedge bthus enters the slot e it will form a lock, which will keep the bitsecurely in its place in the stock. When the handle d is turned backwarduntil the button a is out of the slot e, the bit may he readily slippedout of the stock. This notched button above-described, and representedin Figs. l, 2, and 3 ot' the drawings, may be readilyT applied to acommon round stock, (represented in red lines in Fig. 5 of thedrawings,) by sawinga slot transversely across the stock at a suitablepoint, into which the button tt is introduced and pivoted. as describedfor the square stock. The bit-head is now secured into this round stockin the same manner as described for the square stock.

The button u may be readily stamped out ot' a piece of steel, and itsedge b beveled, as described, so as to form the wedge for drawing thebit-head tightly into its stock. The button can then be applied to acommon bitstock with very little expense.

I do not claim, broadly, the invention of a horizontallyrotaiing buttonto hold the tool into the stock; but,

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The arrangement of the notched wedgefaced pivoted button a with thetool-stock A and tool B, in the nianner'and for the purpose herein shownand described.

DANIEL KELLY.

VVitness'es:

T. SINCLAIE, WM. E. GROVE.

